chore: add tsconfig

lib/tsconfig.json

@@ -0,0 +1,32 @@
+{
+  "compilerOptions": {
+    "strict": false,
+    "strictNullChecks": false,
+    "noUnusedLocals": false,
+    "noUnusedParameters": false,
+    "noImplicitReturns": false,
+    "noImplicitAny": false,
+    "noImplicitThis": false,
+    "noFallthroughCasesInSwitch": false,
+    "declaration": true,
+    "emitDecoratorMetadata": true,
+    "experimentalDecorators": true,
+    "incremental": true,
+    "inlineSourceMap": true,
+    "inlineSources": true,
+    "preserveSymlinks": true,
+    "removeComments": true,
+    "jsx": "react",
+    "jsxFactory": "etch.dom",
+    "lib": ["ES2018", "dom"],
+    "target": "ES2018",
+    "allowJs": true,
+    "resolveJsonModule": true,
+    "esModuleInterop": true,
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "importHelpers": false,
+    "outDir": "../dist"
+  },
+  "compileOnSave": false
+}

package.json

@@ -14,7 +14,9 @@
     "lint": "eslint . --fix",
     "test.lint": "eslint .",
     "clean": "shx rm -rf dist .parcel-cache",
+    "dev.tsc": "npm run build.tsc -- --watch",
     "dev": "cross-env NODE_ENV=development BABEL_KEEP_MODULES=true rollup -c -w",
+    "build.tsc": "tsc -p ./lib/tsconfig.json",
     "build.test": "cross-env NODE_ENV=test BABEL_KEEP_MODULES=true rollup -c",
     "build.readable": "cross-env NODE_ENV=production READABLE_BUILD=true BABEL_KEEP_MODULES=true rollup -c",
     "build": "cross-env NODE_ENV=production cross-env BABEL_KEEP_MODULES=true rollup -c",